Title :
Fast multiple-antenna differential decoding
Author :
Clarkson, Kenneth L. ; Sweldens, Wim ; Zheng, Alice
Author_Institution :
Lucent Technol. Bell Labs., Murray Hill, NJ, USA
fDate :
2/1/2001 12:00:00 AM
Abstract :
We present an algorithm based on lattice reduction for the fast decoding of diagonal differential modulation across multiple antenna. While the complexity of the maximum-likelihood (ML) algorithm is exponential both in the number of antenna and the rate, the complexity of our approximate lattice algorithm is polynomial in the number of antennas and the rate. We show that the error performance of our lattice algorithm is very close to the ML algorithm
Keywords :
Rayleigh channels; antenna arrays; differential phase shift keying; maximum likelihood decoding; DPSK; ML algorithm; Rayleigh flat fading channel; algorithm complexity; antenna arrays; approximate decoding; diagonal differential modulation; error performance; fading coefficients; fast multiple-antenna differential decoding; lattice algorithm; lattice reduction; maximum-likelihood algorithm; mobile wireless environment; Antenna arrays; Channel capacity; Fading; Lattices; Maximum likelihood decoding; Modulation coding; Phase shift keying; Polynomials; Receiving antennas; Wireless communication;
Journal_Title :
Communications, IEEE Transactions on
